Car-brake



fiati: & s

E. R. BRISTOL.

GAR BRAKE.

Patented Jan.16,"1883.

N. PETERS, Phamlnmgnphnf. washington. 0.9.

(No Model.)

' UNITED STATES PATENT OFFICE.

EDMUND R. BRISTOL, OF MADISON, WISCONSIN.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 270,732, dated January16, 1883.

' i Application filed November 25,1882. A(No model.) v

To all whom it may concer-n:

Be it known that I, EDMUND R. BRISTOL, of Madison, in the county ofDane, and in the State of Wisconsin, have invented certain new anduseful Improvements in Gar-Brakes5 and I do hereby declare that thefollowing is a full,

`clear, and exact description thereof.

My invention relates to the braking ot' cars 5 and it consists indevices which will be fully described hereinafter.

In the drawings, Figure l is a vertical section through one end ofthebrake-beam and through my improved shoe. Fig. 2 is a perspective view ofmy device. Fig. 3 is a section of a modification.

A is the brake-shoe. B is the brake-beam. B is a spring for transmittingthe power from the beam to the shoe, and G is a boxinclosing the spring.The shoe A is connected with the box by ears a and bolts a', and thesesame bolts serve to secure the lid C upon the box G, and the upper bolt,a', takes theV lower end of rod b, by which the box'issuspended. Thespring .B'is generally clipped to the beam B, as shown in Fig. 1, andits ends project forward against the shoe and beneath the bolts a',which latter may be provided with sleeves or rollers a2,

that, while they hold the ends of the springtight up against the shoe,permit them to play up anddown freely as the spring is compressed andrelieved.

In the modification, Fig. 3, I clip the spring B to the rear edge ofthebrake-beam and attach the brake-shoe to a backing, D, by a dovetail tongue and groove and by countersunk vnesses.

bolts b'. The backing D consists of a shell the rear walls of whichreceive the ends of the spring B', and are cut out to permit the brakebeam and shoe to approach each other as the power is applied to brakethe wheels, and also to permit of the insertion of a wrench, by whichthe nuts on the bolts b', that hold the shoe in place, may be tightened.The sides of the backing pert'o'rm the same office in the modificationshown in Fig. 3 as the ears a perform they serve to receive the boltsthat connect the shoe with the box. In both instances the box isslotted, as at d, to take the end of the brakebeam; and I may providethe lid of the box V with a small inspection-door, c, and I may alsobolt a plate to each end of the brake-beam, that, projecting along theface of the box, will -keep the slot d closed.

EDMUND R. BRISTOL. Witnesses:

S. S. S'rop'r,

H. G. UNDERWooD.

. in the device shown in Figs. 1 and 2 -that is,

